Sonoff AirGuard TH SNZB-02DR2 ZigBee LCD Temperature and Humidity Sensor

Sonoff AirGuard TH SNZB-02DR2 LCD ZigBee Temperature and Humidity Sensor

The Sonoff AirGuard TH SNZB-02DR2 is a smart ZigBee temperature and humidity sensor with a large 3.6" LCD display that shows current conditions, daily maximum and minimum temperatures, and air comfort levels in real time. It combines laboratory precision (±0.2°C / ±2% RH), modern wireless connectivity, and energy-saving battery operation in one compact device. It lets you always know if your room has a healthy microclimate – no guessing, no guesswork, no unnecessary complications.

Easy to read and large 3.6” LCD screen

The clear, high-contrast display is designed to make key data visible from a distance. One glance is enough to check the temperature, humidity, min/max values for the last 24 hours, and a graphical comfort indicator. No need to open the app or reach for your phone – information is always at your fingertips, exactly when you need it.

Precise premium sensor – Sensirion SHT40

At the heart of the device is the professional Sensirion SHT40 sensor, renowned for its industrial and measurement applications. It provides exceptionally stable and reliable readings, translating into real benefits: better sleeping conditions, healthier air for children, and protecting plants, food, and wine from excessive moisture. This device measures precisely—because there's no room for chance in comfort.

ZigBee 3.0 – intelligent automation without cables

Thanks to ZigBee 3.0 connectivity, the sensor operates stably, responds quickly, and consumes minimal energy. After pairing with the gateway, you can monitor data in the app, set alerts, and create automations—for example, turning on a humidifier when the air is too dry or ventilation when the humidity is too high. It's a smart home that takes care of your comfort before you even notice a problem.

Data History and Analytics

AirGuard TH records measurements and presents them in easy-to-read graphs, allowing you to track changes over time—down to the minute. Daily, weekly, and multi-month statistics are available, as well as information on dew point and VPD. This practical tool helps you better plan ventilation, heating, and plant irrigation, effectively preventing mold and excessive moisture.

Works with your smart home system

The sensor seamlessly integrates with popular platforms and hubs: Sonoff, Home Assistant, Zigbee2MQTT, SmartThings, as well as voice assistants like Alexa and Google Home, and the Matter Bridge environment. You can check the temperature with your voice, view data remotely, and turn on devices from anywhere. This gives you complete freedom and flexibility regardless of your chosen ecosystem.

Proximity Mode – Use Even Without a Gateway

Don't have a ZigBee hub? No problem. In Proximity mode, you can connect directly to your smartphone via Bluetooth to check current parameters, calibrate the sensor, change °C/°F units, or export data. This is an ideal solution for those who want to start with simple monitoring and only then expand the system with automation.

Compact design and versatile use

A slim, durable PC+ABS housing, two AAA battery power supply, and the ability to stand or hang make AirGuard TH a perfect fit anywhere – in a bedroom, nursery, greenhouse, pantry, basement, warehouse, or office. A wide operating range (-20°C to 60°C, 5–95% RH) guarantees reliability in a variety of conditions. This small device gives you significant control over the comfort and safety of your surroundings every day.

Included

• Sonoff AirGuard TH SNZB-02DR2 LCD ZigBee Temperature and Humidity Sensor
• User Manual

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